United States · 1991–2020 normal
Mount Vernon in
September.
Typical September weather in Mount Vernon: 26.2°C by day, 13.5°C at night, 84 mm of rain over 7 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high26.2°C
Typical low13.5°C
Rain84 mm
Wet days7
Comfort score 79 this month, the highest of the year. Daylight is calculated as 12 h 23 from latitude 37.35°.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 4301703
- NOAA station
- USC00155648 · MT VERNON
- Station distance
- 0.4 km from the place centre
- Coverage
- Strong coverage · 26 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.